[elvin315]

No promises but this is something I'm looking at.

Rear/Vertical Bushing Project (exploring the possibility of making my own poly-bushings)
GM Bushing diameter: 48.5mm (1.9095 inches)
Raw Polyurethane for Rear/Vertical Bushing
McMaster Carr: 2" OD, 1/2" ID, 6" Length, 60A Durometer, $23.87 Each #87235K572
http://www.mcmaster.com/

In the meantime:

Bushings, Catera, Rear Lower: 97-01 $30.51
http://www.gmpartsdirect.com/

Elvin